Numbers 9:15-17

15And on the day that the tabernacle was reared up the cloud covered the tabernacle, even the tent of the testimony: and at even it was upon the tabernacle as it were the appearance of fire, until morning.

16So it was alway: the cloud covered it, and the appearance of fire by night.

17And whenever the cloud was taken up from over the Tent, then after that the children of Israel journeyed: and in the place where the cloud abode, there the children of Israel encamped.